Aircraft Engine On-Line Wear Monitor Based on Isotope X-Ray Fluorescence Method

An OLWM(On-Line Wear Monitor) of aircraft engine based on IXRF(Isotope X-Ray Fluorescence) method is illustrated. The lubrication oil of running engine has plenty of wear debris. IXRF method can detect the composition and content of different metal on-line, according to the principle that different metals radiate different length of X-ray. One advantage of this technique is that it can make the test rapid, reliable and contactless. The experimental results indicate that OLWM can examine the concentration of Fe and Cu in oil on time. The study and application of this method can make early failure prediction of engine and avoid serious fault.